Rare earth chloride concentration and separation system

Abstract

The utility model discloses a rare earth chloride concentration and separation system which comprises a pipeline assembly, the pipeline assembly is at least used for passing of a rare earth chloride solution, a preheater and an evaporator are connected to the pipeline assembly, and a heater is arranged in the evaporator. The rare earth chloride solution sequentially passes through the preheater, the evaporator and the heater in the flowing process in the pipeline assembly. A cleaning assembly is arranged on one side of the evaporator and at least used for cleaning a rare earth chloride solution. A steam input assembly is arranged at one end of the evaporator and at least used for inputting steam into the evaporator. A valve assembly is arranged on the pipeline assembly, and the valve assembly is at least used for controlling the on-off of the pipeline assembly. The heater is arranged in the evaporator, a connected circulating pipeline and a forced circulating pump for evaporation are not arranged between the heater and the evaporator, the circulating pipeline or the circulating pump can be prevented from being blocked by crystals in the high-concentration and low-temperature process, and long-period stable operation of the system is guaranteed.

Description

Technical Field

[0001] The utility model relates to a rare earth chloride concentration and separation system, belonging to the technical field of mixed solution concentration and separation. Background Art

[0002] The traditional rare earth chloride concentration process mainly includes five parts: rare earth chloride solution inlet, concentration process liquid replenishment, concentration, discharge and condensation solidification recovery. The entire concentration process is performed manually by operators. During the concentration process, operators need to judge the material concentration in the concentration pot based on experience, perform replenishment and discharge operations, and adjust the temperature. Manual sampling and offline analysis are required to determine the grade of the concentrated product.

[0003] Traditional manual rare earth chloride concentration processes consume significant energy and are labor-intensive for operators. Furthermore, manual operation introduces unavoidable and unpredictable human interference, which can lead to crystallization during high-concentration, low-temperature processes that clog circulation pipes or pumps. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rare earth chloride concentration and separation system that can automatically concentrate and separate rare earth chloride, save manpower, improve the rare earth chloride concentration production efficiency, and stabilize the quality of the concentrated product.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model includes:

[0006] A rare earth chloride concentration and separation system includes a pipeline assembly, the pipeline assembly being at least used for passing a rare earth chloride solution, the pipeline assembly being connected to a preheater and an evaporator, the evaporator being internally provided with a heater, and the rare earth chloride solution sequentially passing through the preheater, the evaporator, and the heater during flow in the pipeline assembly; a cleaning assembly being provided on one side of the evaporator, the cleaning assembly being at least used for cleaning the rare earth chloride solution;

[0007] A steam input assembly is provided at one end of the evaporator, and the steam input assembly is at least used to input steam into the evaporator; a valve assembly is provided on the pipeline assembly, and the valve assembly is at least used to control the on-off of the pipeline assembly.

[0008] Furthermore, the cleaning assembly includes a clean water pipe, the clean water pipe is connected to the pipe assembly, the clean water pipe is connected to a clean water tank and a clean water pump, and the clean water in the clean water tank flows into the pipe assembly under the drive of the clean water pump;

[0009] The cleaning assembly further comprises a washing pipe, one end of which is connected to the bottom end of the evaporator, and a washing tank and a washing water pump are connected to the washing pipe. Driven by the washing water pump, washing water passes through the washing tank and flows out.

[0010] Furthermore, the washing tank includes a lanthanum-cerium washing tank, the washing water pump includes a lanthanum-cerium washing water pump, and the lanthanum-cerium washing tank and the lanthanum-cerium washing water pump are connected through a washing pipeline.

[0011] Furthermore, the washing tank includes a single lanthanum washing tank, the washing water pump includes a single lanthanum washing water pump, and the single lanthanum washing tank and the single lanthanum washing water pump are connected through a pipeline.

[0012] Furthermore, the washing tank includes a single cerium washing tank, the washing water pump includes a single cerium washing water pump, and the single cerium washing tank and the single cerium washing water pump are connected through a pipeline.

[0013] Furthermore, a demister is provided on the top of the evaporator, and the demister is connected to a condensation assembly via a pipeline, and the condensation assembly is at least used to condense the acidic water vapor evaporated by the evaporator into liquid. The heater, evaporator and demister are an integrated structure.

[0014] Furthermore, the condensation component includes a condensation pipe, to which a condenser, a condensation water tank and a condensation water pump are connected, and the condensed water flows out under the drive of the condensation water pump.

[0015] Furthermore, a vacuum component is connected to the condensation pipe, and the vacuum component is connected to the outlet end of the condenser. The vacuum component is an environmentally friendly liquid ring closed circulation system resistant to acidic gases, and the vacuum component includes a liquid ring vacuum pump, a graphite heat exchanger and a gas-liquid separator.

[0016] Furthermore, one side of the evaporator is connected to a condensate pipe. The rare earth chloride concentration and separation system also includes a material receiving box.

[0017] Compared with the prior art, the advantages of the present invention include:

[0018] 1) The utility model provides a rare earth chloride concentration and separation system, wherein the heater is disposed inside the evaporator, and there is no circulation pipe connected between the heater and the evaporator, nor is there a forced circulation pump for evaporation. This can prevent crystallization from clogging the circulation pipe or circulation pump during high-concentration, low-temperature processes, thereby ensuring long-term stable operation of the system;

[0019] 2) The utility model provides a rare earth chloride concentration and separation system, wherein a demister is provided on the top of the evaporator, and the demister is used to prevent the rare earth chloride gas phase from entering the condensation component;

[0020] 3) The utility model provides a rare earth chloride concentration and separation system, wherein the heater and evaporator can directly discharge the material to the flaker without the need for secondary concentration and separation;

[0021] 4) The utility model provides a rare earth chloride concentration and separation system, which controls the on-off of the pipeline assembly through the valve assembly to achieve automatic control of the concentration and separation of lanthanum chloride and cerium, improve the production efficiency of rare earth chloride concentration, and stabilize the quality of the concentrated product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of a rare earth chloride concentration and separation system provided in a typical embodiment of the present invention;

[0024] Explanation of the accompanying drawings: 1. Preheater 1; 2. Evaporator; 21. Defogger; 22. Heater; 3. Condenser; 4. Receiving box; 5. Clean water tank; 6. Clean water pump; 7. Lanthanum-cerium washing tank; 8. Lanthanum-cerium washing water pump; 9. Single lanthanum washing tank; 10. Single lanthanum washing water pump; 11. Single cerium washing tank; 12. Single cerium washing water pump; 13. Condensate tank; 14. Condensate pump; 15. Vacuum component; 16. Steam input component. DETAILED DESCRIPTION

[0025] In view of the shortcomings of the existing technology, the inventors of this case, after long-term research and extensive practice, have proposed the technical solution of this utility model. The following will further explain this technical solution, its implementation process and principles.

[0026] The utility model discloses a rare earth chloride concentration and separation system. Figure 1As shown, the rare earth chloride concentration and separation system includes a pipeline assembly, which is at least used for the passage of rare earth chloride solution, and the pipeline assembly includes a pipeline, in which the rare earth chloride solution flows; the pipeline assembly is connected to a preheater 1 and an evaporator 2, and a heater 22 is provided inside the evaporator 2. During the flow of the rare earth chloride solution in the pipeline assembly, the preheater 1, the evaporator 2 and the heater 22 are sequentially passed through; preferably, the heater 22 is provided at the bottom of the evaporator 2; preferably, the material of the heater 22 is a graphite heat exchange block; there is no circulating pipe connected between the heater 22 and the evaporator 2, nor is there a forced circulation pump for evaporation. The heater 22 and the evaporator 2 can be directly discharged to the flaker through the valve at the bottom, without the need for secondary concentration and separation. There is no circulating pipe connected between the heater 22 and the evaporator 2, nor is there a forced circulation pump for evaporation, which can prevent crystallization from clogging the circulating pipe or circulating pump during high concentration and low temperature processes, thereby ensuring long-term stable operation of the system.

[0027] In some implementation cases, a cleaning assembly is provided on one side of the evaporator 2, and the cleaning assembly is at least used to clean the rare earth chloride solution; specifically, the cleaning assembly includes a clean water pipe, one end of the clean water pipe is connected to the clean water source, and the other end of the clean water pipe is connected to the pipe assembly, and the clean water pipe is connected to a clean water tank 5 and a clean water pump 6. Driven by the clean water pump 6, the clean water in the clean water tank 5 flows into the pipe assembly.

[0028] The cleaning assembly further includes a washing pipe, one end of which is connected to the bottom end of the evaporator 2 , and a washing tank and a washing water pump are connected to the washing pipe. Driven by the washing water pump, washing water passes through the washing tank and flows out.

[0029] Embodiment 1: The washing tank includes a lanthanum-cerium washing tank 7, the washing water pump includes a lanthanum-cerium washing water pump 8, and the lanthanum-cerium washing tank 7 and the lanthanum-cerium washing water pump 8 are connected through a washing pipe.

[0030] Embodiment 2: The washing tank includes a single lanthanum washing tank 9, and the washing water pump includes a single lanthanum washing water pump 10. The single lanthanum washing tank 9 and the single lanthanum washing water pump 10 are connected by a pipeline.

[0031] When the single lanthanum chloride solution is concentrated, the cleaning water flows out from the clean water tank 5 driven by the clean water pump 6, and then passes through the preheater 1, evaporator 2 and heater 22 for cleaning in sequence. The cleaning water flows out from the bottom of the evaporator 2 into the single lanthanum washing tank 9, and is then sent to the single lanthanum chloride solution stock tank through the single lanthanum washing water pump 10.

[0032] Embodiment 3: The washing tank includes a single cerium washing tank 11, and the washing water pump includes a single cerium washing water pump 12. The single cerium washing tank 11 and the single cerium washing water pump 12 are connected by a pipeline.

[0033] When the single cerium chloride solution is concentrated, the cleaning water flows out from the clean water tank 5 driven by the clean water pump 6, and then passes through the preheater 1, evaporator 2 and heater 22 for cleaning in sequence. The cleaning water flows out from the bottom of the evaporator 2 into the single cerium washing tank 11, and is then sent into the single cerium chloride solution stock tank through the single cerium washing water pump 12.

[0034] Example 4: The washing tank includes a lanthanum-cerium washing tank 7, a single lanthanum washing tank 9 and a single cerium washing tank 11, and the washing water pump includes a lanthanum-cerium washing water pump 8, a single lanthanum washing water pump 10 and a single cerium washing water pump 12. The lanthanum-cerium washing tank 7 is connected to the lanthanum-cerium washing water pump 8 through a washing pipe, the single lanthanum washing tank 9 is connected to the single lanthanum washing water pump 10 through a pipe, and the single cerium washing tank 11 is connected to the single cerium washing water pump 12 through a pipe.

[0035] In some implementation cases, a demister 21 is provided on the top of the evaporator 2, and the demister 21 is used to prevent the rare earth chloride gas phase from entering the condensation assembly. The demister 21 is connected to the condensation assembly through a pipeline, and the condensation assembly is at least used to condense the acidic water vapor evaporated from the evaporator into a liquid. Specifically, the condensation assembly includes a condensation pipe, to which a condenser 3, a condensation water tank 13 and a condensation water pump 14 are connected. The evaporated acidic water vapor forms condensed water after encountering the low-temperature condensation pipe, and the condensed water flows out under the drive of the condensation water pump 14. Preferably, the heater 22, the evaporator 2 and the demister 21 are an integral structure, which can prevent crystallization from clogging the circulation pipe or circulation pump during the high-concentration and low-temperature process, thereby ensuring the long-term stable operation of the system.

[0036] In some implementation cases, one end of the evaporator 2 is connected to a steam input component 16 , and the steam input component 16 is at least used to input steam into the evaporator 2 .

[0037] In some implementation cases, a valve assembly is provided on the pipeline assembly, and the valve assembly is at least used to control the on-off of the pipeline assembly, so that the rare earth chloride concentration and separation system is automated.

[0038] Preferably, a vacuum component 15 is connected to the condensation pipe, and the vacuum component 15 is connected to the outlet end of the condenser 3. The vacuum component 15 is an environmentally friendly liquid ring closed circulation system resistant to acidic gases. The vacuum component 15 includes a liquid ring vacuum pump, a graphite heat exchanger and a gas-liquid separator.

[0039] One side of the evaporator 2 is connected to a condensate pipe, which is used to draw out the condensate of the heater steam.

[0040] In some implementation cases, the rare earth chloride concentration and separation system further includes a receiving box 4, and the bottom end of the evaporator 2 is connected to a flaker. When the flaker stops running, in order to save energy, the concentrated rare earth chloride solution is temporarily placed in the receiving box 4 without being diluted.

[0041] It should be understood that the above embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A rare earth chloride concentration and separation system, characterized by: include A pipeline assembly, the pipeline assembly is at least used for allowing rare earth chloride solution to pass through, the pipeline assembly is connected to a preheater (1) and an evaporator (2), a heater (22) is provided inside the evaporator (2), and the rare earth chloride solution passes through the preheater (1), the evaporator (2) and the heater (22) in sequence during the process of flowing in the pipeline assembly; A cleaning component, the cleaning component is arranged on one side of the evaporator (2), and the cleaning component is at least used for cleaning the rare earth chloride solution; a steam input assembly (16), the steam input assembly (16) being arranged at one end of the evaporator (2), the steam input assembly (16) being at least used for inputting steam into the evaporator (2); A valve assembly is provided on the pipeline assembly and is at least used to control the on-off of the pipeline assembly.

2. A rare earth chloride concentration and separation system according to claim 1, characterized in that: The cleaning assembly comprises a clean water pipeline, the clean water pipeline is connected to the pipeline assembly, the clean water pipeline is connected to a clean water tank (5) and a clean water pump (6), and the clean water in the clean water tank (5) flows into the pipeline assembly under the drive of the clean water pump (6); The cleaning assembly further comprises a washing pipe, one end of which is connected to the bottom end of the evaporator (2), and a washing tank and a washing water pump are connected to the washing pipe. Driven by the washing water pump, washing water passes through the washing tank and flows out.

3. A rare earth chloride concentration and separation system according to claim 2, characterized in that: The washing tank comprises a lanthanum-cerium washing tank (7), the washing water pump comprises a lanthanum-cerium washing water pump (8), and the lanthanum-cerium washing tank (7) and the lanthanum-cerium washing water pump (8) are connected via a washing pipeline.

4. A rare earth chloride concentration and separation system according to claim 2 or 3, characterized in that: The washing tank comprises a single lanthanum washing tank (9), the washing water pump comprises a single lanthanum washing water pump (10), and the single lanthanum washing tank (9) and the single lanthanum washing water pump (10) are connected via a pipeline.

5. A rare earth chloride concentration and separation system according to claim 4, characterized in that: The washing tank comprises a single cerium washing tank (11), the washing water pump comprises a single cerium washing water pump (12), and the single cerium washing tank (11) and the single cerium washing water pump (12) are connected via a pipeline.

6. The rare earth chloride concentration and separation system according to claim 1, characterized in that: A demister (21) is provided on the top of the evaporator (2), and the demister (21) is connected to a condensation assembly via a pipeline, and the condensation assembly is at least used to condense the acidic water vapor evaporated by the evaporator into liquid; And / or, the heater (22), evaporator (2) and demister (21) are of an integral structure.

7. A rare earth chloride concentration and separation system according to claim 6, characterized in that: The condensation assembly comprises a condensation pipe, to which a condenser (3), a condensation water tank (13) and a condensation water pump (14) are connected, and condensed water flows out under the drive of the condensation water pump (14).

8. A rare earth chloride concentration and separation system according to claim 7, characterized in that: The condensation pipe is connected to a vacuum component (15), and the vacuum component (15) is connected to the outlet end of the condenser (3); And / or, the vacuum component (15) is an environmentally friendly liquid ring closed circulation system resistant to acidic gases, and the vacuum component (15) includes a liquid ring vacuum pump, a graphite heat exchanger and a gas-liquid separator.

9. The rare earth chloride concentration and separation system according to claim 1, characterized in that: One side of the evaporator (2) is connected to a condensed water pipe.

10. The rare earth chloride concentration and separation system according to claim 1, characterized in that: The heater (22) is arranged at the bottom of the evaporator (2); And / or, the rare earth chloride concentration and separation system further includes a material receiving box (4).

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